Fatty Acids, Free


Abbrev Code:FFA   
Order Code:LAB986Order Name:Fatty Acids Free
Synonyms:Nonesterified Fatty Acid; Free Fatty Acids
Methodology:Spectrophotometric
CPT Codes: 82725 x1
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported in 1-4 days.
Special Instructions:Fasting specimen is preferred. Serum must be separated from cells and frozen immediately after clot formation, otherwise lipase continues to break down triglycerides, giving rise to elevated levels of nonesterified (free) fatty acids.


Collection Instructions

Specimen:Blood
Optimal Volume:2 mL
Minimum\Peds Volume:0.6 mL
Container:Red or gold (gel)
Alternate Containers: Red (no gel)
Collection Instructions:Collect on ice.
Causes for Rejection:Specimens collected in EDTA, heparin, sodium fluoride/potassium oxalate, sodium citrate or ammonium oxalate. Non-frozen specimens.


Processing and Shipping

Specimen Processing:Allow serum specimen to clot completely on ice. Separate from cells immediately after and aliquot 1 mL, 0.2 mL minimum and freeze immediately.
Shipping Instructions:Ship on dry ice.
Stability:Stability after separation from cells: 4 hours refrigerated; 1 month frozen.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:80120


Interpretive

Reference Range:

Effective Nov 17, 2014:

Age

mmol/L

0-5 mo

Less than or equal to 0.73

6 mo – 1 y

Less than or equal to 0.99

2-17 y

Less than or equal to 1.78

18 y and older

Less than or equal to 0.78

 

 



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